The XP 20 is very small. It is so small it can fit into nearly anyone's pocket, especially the people that like jeans with extra big pockets.

This gun is also very light, so that you will hardly notice you're carrying something. The compact nature of the gun, along with the light weight make an excellent backup weapon.

Even though this is an excellent backup weapon, I would really not recommend you use this as your only gun. One of the main drawbacks of the small and light nature of the gun is that it can only hold 7oz of water, and it uses the single pressure tank system (although the tank is so small, it doesn't really matter)

This gun only takes a few pumps, and since the pump stroke is so small, you won't be pumping much at all. The gun is very easy to pump, so the combination of few light pumps is really neat.

The range rivals guns more than twice it's size. It's really amazing to behold a gun this small shooting so far. Excellent for sniping, except for the small tank

Output is fairly good for this size of gun. Even though the output is quite low, it just takes a few seconds for the gun to entirely run out of water.

You almost absolutely have to have this gun for it's backup uses, just don't expect it to be a main gun like the CPS 1000 is